chrome.usb

Description

Use the chrome.usb API to interact with connected USB devices. This API provides access to USB operations from within the context of an app. Using this API, apps can function as drivers for hardware devices. Errors generated by this API are reported by setting runtime.lastError and executing the function's regular callback. The callback's regular parameters will be undefined in this case.

Permissions

usb

Availability

ChromeOS only

Types

ConfigDescriptor

Properties

  • active

    boolean

    Chrome 47+

    Is this the active configuration?

  • configurationValue

    number

    The configuration number.

  • description

    string optional

    Description of the configuration.

  • extra_data

    ArrayBuffer

    Extra descriptor data associated with this configuration.

  • interfaces

    InterfaceDescriptor[]

    Available interfaces.

  • maxPower

    number

    The maximum power needed by this device in milliamps (mA).

  • remoteWakeup

    boolean

    The device supports remote wakeup.

  • selfPowered

    boolean

    The device is self-powered.

ConnectionHandle

Properties

  • handle

    number

    An opaque handle representing this connection to the USB device and all associated claimed interfaces and pending transfers. A new handle is created each time the device is opened. The connection handle is different from Device.device.

  • productId

    number

    The product ID.

  • vendorId

    number

    The device vendor ID.

ControlTransferInfo

Properties

  • data

    ArrayBuffer optional

    The data to transmit (required only by output transfers).

  • direction

    Direction

    The transfer direction ("in" or "out").

  • index

    number

    The wIndex field, see Ibid.

  • length